TY - JOUR N2 - As the most recent video coding standard, High Efficiency Video Coding (HEVC) adopts various novel techniques, including a quad-tree based coding unit (CU) structure and additional angular modes used for intra encoding. These new techniques achieve a notable improvement in coding efficiency at the penalty of significant computational complexity increase. Thus, a fast HEVC coding algorithm is highly desirable. In this paper, we propose a fast intra CU decision algorithm for HEVC to reduce the coding complexity, mainly based on a key-point detection. A CU block is considered to have multiple gradients and is early split if corner points are detected inside the block. On the other hand, a CU block without corner points is treated to be terminated when its RD cost is also small according to statistics of the previous frames. The proposed fast algorithm achieves over 62% encoding time reduction with 3.66%, 2.82%, and 2.53% BD-Rate loss for Y, U, and V components, averagely. The experimental results show that the proposed method is efficient to fast decide CU size in HEVC intra coding, even though only static parameters are applied to all test sequences. L1 - http://www.czasopisma.pan.pl/Content/107740/PDF/44_1445.pdf L2 - http://www.czasopisma.pan.pl/Content/107740 PY - 2018 IS - No 3 DO - 10.24425/123525 KW - HEVC KW - Video Coding KW - Fast CU Decision KW - Corner Detection A1 - Xu, Zhe A1 - Min, Biao A1 - Cheung, Ray C.C. PB - Polish Academy of Sciences Committee of Electronics and Telecommunications VL - vol. 64 DA - 2018.08.23 T1 - Key-point Detection based Fast CU Decision for HEVC Intra Encoding UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/107740 T2 - International Journal of Electronics and Telecommunications ER -